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QUESTION 5 A survey of 100 businesses revealed that the mean after-tax profit was $80,000 and the standard deviation was $15,000. Determine the 90% confidence

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QUESTION 5 A survey of 100 businesses revealed that the mean after-tax profit was $80,000 and the standard deviation was $15,000. Determine the 90% confidence interval estimate of the mean after-tax profit. O a. [77060, 82940] O b. [77540, 82460] O C. [78032, 81968] O d. [76904, 83096] O e. [76130, 83870]

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